Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bf39e6891eb22db…

MALICIOUS

PDF

41.1 KB Created: 2020-08-29 15:52:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8316b20fba02df66aea4f630d1e45ac2 SHA-1: 7e4e41260d1dbc6020de669d578bb9a3bb278e8d SHA-256: 8bf39e6891eb22db193c3717440bc319af4fbd6adc2937a63c10e5bbc6cc8f4e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to a song download and the malicious URL. This suggests a social engineering lure to redirect the user to malicious content. No scripts were extracted, and the family is unknown.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=oru+koottu+kiliyaga+song+download
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/fetesi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/zubugedesuzegasoraxaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/0191/2224/files/zepofuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/door_county_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/roxafudowetarapen.pdf
    • https://static.usrfiles.com/ugd/10b11f_6a635875375d4661998857523f792d61.pdf
    • https://static.usrfiles.com/ugd/b8c837_1dcce9e24629473e9e374a9c32e7160e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dfcf5f11552475db2c40cf7f05396e2.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/50602978835.pdf
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/apa_guidelines_for_footnotes.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6083/files/58582153780.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/76675381665.pdf
    • https://static.usrfiles.com/ugd/b8c837_69fe03376c6847e08045daf54c459169.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f1d43a79d42465ea811eaa6c8d4cbc0.pdf
    • https://static.usrfiles.com/ugd/b8c837_d66773c55c68409da9e384c497cd7da9.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049e1.bin
56e188158543524e08ddbfde811b46a1bb303456140172088c0f45c01d31d1bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E1 5040 bytes
font_01_sfnt_off00005b28.bin
2e1e690a15999861b199e751d320db4a8fceab78161b7d391983da78480cdd92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B28 14264 bytes
font_02_sfnt_off0000876d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x876D 4324 bytes

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